I have logged your request for SQL Packager to remove the dashes from the date format in the generated script (SPA-538). It will be considered for a future release of SQL Packager although we have no timescales for this at present.

Our export date format looks like your example above (from a swedish 2008 db) with "yyyy-mm-dd" but a French SQL express 2008 (French_CI_AS) does not accept this format when running the EXE from SQL packager.
However, if we generate the scripts, and then change the dates manually to yyyymmdd it works (when running the scripts manually).
The problem is that we generate an exe file with your tool and we have no way to change the dateformat to yyymmdd.